Evolution of star clusters on eccentric orbits: semi-analytical approach

@article{Ebrahimi2019EvolutionOS,
  title={Evolution of star clusters on eccentric orbits: semi-analytical approach},
  author={Hamid Ebrahimi and Hosein Haghi and Pouria Khalaj and Akram Hasani Zonoozi and Ghasem Safaei},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019}
}
We study the dynamical evolution of star clusters on eccentric orbits using a semi-analytical approach. In particular we adapt and extend the equations of EMACSS code, introduced by Gieles et al. (2014), to work with eccentric orbits. We follow the evolution of star clusters in terms of mass, half-mass radius, core radius, Jacobi radius and the total energy over their dissolution time. Moreover, we compare the results of our semi-analytical models against $N$-body computations of clusters with… Expand
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References

SHOWING 1-10 OF 66 REFERENCES
Evolution of star clusters on eccentric orbits
We study the evolution of star clusters on circular and eccentric orbits using direct N-body simulations. We model clusters with initially N = 8k and 16k single stars of the same mass, orbitingExpand
The effect of orbital eccentricity on the dynamical evolution of star clusters
We use N-body simulations to explore the influence of orbital eccentricity on the dynamical evolution of star clusters. Specifically we compare the mass loss rate, velocity dispersion, relaxationExpand
Dynamical evolution of star clusters in tidal fields
We report the results of a large set of N-body calculations aimed at studying the evolution of multimass star clusters in external tidal fields. Our clusters start with the same initial massExpand
Anisotropic gaseous models of tidally limited star clusters: comparison with other methods
We present new models of the evolution and dissolution of star clusters evolving under the combined influence of internal relaxation and external tidal fields, using the anisotropic gaseous modelExpand
The influence of orbital eccentricity on tidal radii of star clusters
We have performed N-body simulations of star clusters orbiting in a spherically symmetric smooth galactic potential. The model clusters cover a range of initial half-mass radii and orbitalExpand
A prescription and fast code for the long-term evolution of star clusters
We introduce the star cluster evolution code Evolve Me A Cluster of StarS (EMACSS), a simple yet physically motivated computational model that describes the evolution of some fundamental propertiesExpand
A prescription and fast code for the long-term evolution of star clusters - II. Unbalanced and core evolution
We introduce version two of the fast star cluster evolution code Evolve Me A Cluster of StarS (emacss). The first version (Alexander and Gieles) assumed that cluster evolution is balanced for theExpand
The life cycle of star clusters in a tidal field
The evolution of globular clusters due to 2-body relaxation results in an outward flow of energy and at some stage all clusters need a central energy source to sustain their evolution. Henon providedExpand
A prescription and fast code for the long-term evolution of star clusters - III. Unequal masses and stellar evolution
We present a new version of the fast star cluster evolution code Evolve Me A Cluster of StarS (emacss). While previous versions of emacss reproduced clusters of single-mass stars, this version modelsExpand
More on the structure of tidal tails
We investigate the epicyclic motion of stars escaping from star clusters. Using streaklines, we visualise the path of escaping stars and show how epicyclic motion leads to over- and underdensities inExpand
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